Two substances and are taken such that initially

CHEMISTRY · Single correct · CBSE · Chemistry · Chemical Kinetics · Chemical Kinetics

Problem

Two substances

A

(t_{1/2}=5\,\text{min})

and

B

(t_{1/2}=15\,\text{min})

are taken such that initially

[A]=4[B]

. After what time will their concentrations be equal? Assume both reactions are first order. (a)

5\,\text{min}

(b)

15\,\text{min}

(c)

20\,\text{min}

(d) Concentrations can never be equal